scripts/Makefile.clean

   1 # ==========================================================================
   2 # Cleaning up
   3 # ==========================================================================
   4
   5 src := $(obj)
   6
   7 PHONY := __clean
   8 __clean:
   9
  10 # Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
  11 # Usage:
  12 # $(Q)$(MAKE) $(clean)=dir
  13 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
  14
  15 # The filename Kbuild has precedence over Makefile
  16 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  17 include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
  18
  19 # Figure out what we need to build from the various variables
  20 # ==========================================================================
  21
  22 __subdir-y      := $(patsubst %/,%,$(filter %/, $(obj-y)))
  23 subdir-y        += $(__subdir-y)
  24 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
  25 subdir-m        += $(__subdir-m)
  26 __subdir-n      := $(patsubst %/,%,$(filter %/, $(obj-n)))
  27 subdir-n        += $(__subdir-n)
  28 __subdir-       := $(patsubst %/,%,$(filter %/, $(obj-)))
  29 subdir-         += $(__subdir-)
  30
  31 # Subdirectories we need to descend into
  32
  33 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
  34 subdir-ymn      := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
  35
  36 # Add subdir path
  37
  38 subdir-ymn      := $(addprefix $(obj)/,$(subdir-ymn))
  39
  40 # build a list of files to remove, usually releative to the current
  41 # directory
  42
  43 __clean-files   := $(extra-y) $(always)                  \
  44                    $(targets) $(clean-files)             \
  45                    $(host-progs)                         \
  46                    $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
  47
  48 # as clean-files is given relative to the current directory, this adds
  49 # a $(obj) prefix, except for absolute paths
  50
  51 __clean-files   := $(wildcard                                               \
  52                    $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
  53                    $(filter /%, $(__clean-files)))
  54
  55 # as clean-dirs is given relative to the current directory, this adds
  56 # a $(obj) prefix, except for absolute paths
  57
  58 __clean-dirs    := $(wildcard                                               \
  59                    $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs)))    \
  60                    $(filter /%, $(clean-dirs)))
  61
  62 # ==========================================================================
  63
  64 quiet_cmd_clean    = CLEAN   $(obj)
  65       cmd_clean    = rm -f $(__clean-files)
  66 quiet_cmd_cleandir = CLEAN   $(__clean-dirs)
  67       cmd_cleandir = rm -rf $(__clean-dirs)
  68
  69
  70 __clean: $(subdir-ymn)
  71 ifneq ($(strip $(__clean-files)),)
  72         +$(call cmd,clean)
  73 endif
  74 ifneq ($(strip $(__clean-dirs)),)
  75         +$(call cmd,cleandir)
  76 endif
  77 ifneq ($(strip $(clean-rule)),)
  78         +$(clean-rule)
  79 endif
  80         @:
  81
  82
  83 # ===========================================================================
  84 # Generic stuff
  85 # ===========================================================================
  86
  87 # Descending
  88 # ---------------------------------------------------------------------------
  89
  90 PHONY += $(subdir-ymn)
  91 $(subdir-ymn):
  92         $(Q)$(MAKE) $(clean)=$@
  93
  94 # If quiet is set, only print short version of command
  95
  96 cmd = @$(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
  97
  98
  99 # Declare the contents of the .PHONY variable as phony.  We keep that
 100 # information in a variable se we can use it in if_changed and friends.
 101
 102 .PHONY: $(PHONY)